Cost really depends on where you are located.

A reasonable company that produces PCBs and also supplies you with free PCB and Schematic design software is www.expresspcb.com Basically you design the PCB layout using their own propriatery layout software and then there is an option to then 'send' the design to them electronically. It even allows you to cost the board based on your preferences, double sided, silk screen, solder mask etc etc.

The only downside with expresspcb, is once the board has been designed, you have to use there production service. Alternatively, find another PCB manufacturer that accepts the board layout in GERBER format, this is then more towards the industry standard.

I've also sent you a PM.

Hope this helps,

Regards,

Steve